def mousePressEvent(self, evt: QGraphicsSceneMouseEvent):
if evt.button() == Qt.LeftButton:
pos = (evt.scenePos().x(), evt.scenePos().y())
self.relative_pos = (pos[0] - self.x(), pos[1] - self.y())
if not evt.modifiers() == Qt.ControlModifier:
self.scene().signal_clear_selection.emit()
self.scene().select_item(self)
self.color = COLOR_SELECTED
elif evt.button() == Qt.RightButton:
pass
elif evt.button() == Qt.MidButton:
pass
def mousePressEvent(self, event: QGraphicsSceneMouseEvent):
"""
mousePressEvent
Parameters
----------
event : QGraphicsSceneMouseEvent
"""
if self._locked:
return
# deselect all other items after self one is selected
if not self.isSelected() and not (event.modifiers()
& Qt.ControlModifier):
self._scene.clearSelection()
node_geometry = self._node.geometry
for port_to_check in (PortType.input, PortType.output):
# TODO do not pass sceneTransform
port = node_geometry.check_hit_scene_point(port_to_check,
event.scenePos(),
self.sceneTransform())
if not port:
continue
connections = port.connections
# start dragging existing connection
if connections and port_to_check == PortType.input:
conn, = connections
interaction = NodeConnectionInteraction(
self._node, conn, self._scene)
interaction.disconnect(port_to_check)
elif port_to_check == PortType.output:
# initialize new Connection
out_policy = port.connection_policy
if connections and out_policy == ConnectionPolicy.one:
conn, = connections
self._scene.delete_connection(conn)
# TODO_UPSTREAM: add to FlowScene
connection = self._scene.create_connection(port)
connection.graphics_object.grabMouse()
pos = QPoint(event.pos().x(), event.pos().y())
geom = self._node.geometry
state = self._node.state
if self._node.model.resizable() and geom.resize_rect.contains(pos):
state.resizing = True